bang down the door

1. To knock on a door very loudly and forcefully. A: "Who was banging down the door at 6 AM?" B: "The landscaper needed us to move our car." Quit banging down the door, I'm coming! Would you stop banging down the door? They're obviously not home!

2. To passionately or forcefully demand something. People are banging down the door for equality—when will the mayor listen? The union leaders have been banging down the door for a raise, to little avail. No one around here will read your manuscript unless you bang down the door.